Which graph represents the equation Cost = Number of toppings x 2 + 3

Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?

Can any one me with the answers to these questions asap?

Iwill give you ! what is the measure of ∠v ?